Nepean Bay Weather Forecast

    • 9
    • 18

    Cloudy

    • 8
    • 19

    Partly cloudy

    • 7
    • 21

    Mostly sunny

    • 9
    • 22

    Partly cloudy

    • 11
    • 21

    Partly cloudy

    • 11
    • 20

    Shower or two

    • 10
    • 21

    Shower or two

Today 10 May Kangaroo Island

Cloudy. Medium chance of showers, becoming less likely in the late afternoon and evening. Winds southeasterly 15 to 20 km/h becoming light in the late evening. Daytime maximum temperatures around 18.

Investigator Strait Coastal Waters

Wind
Southeasterly about 10 knots increasing to 10 to 15 knots in the early afternoon.
Seas
Below 1 metre.
1st Swell
Southerly 1 to 1.5 metres through the Backstairs Passage, decreasing to around 1 metre later in the evening.
Weather
Cloudy.
Weather Situation
A strong high pressure system south of Western Australia is moving slowly eastwards to be near Tasmania early next week.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Nepean Bay Temperature Statistics View More

May Temperature

Kingscote Airport (7km)

  • Lowest 5 May, 2026

    7.7 °C

  • Average May

    15.1 °C

  • Highest 1 May, 2026

    27.1 °C

Climate (2021–Present)

Kingscote Airport (7km)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    9.3 °C

  • Average 2021–2026

    14.8 °C

  • Average High 2021–2026

    21.1 °C
Get WillyWeather+ to remove ads